Dewes Cassal Marcella, Cardoso Soares Pedro, Dos Santos Marcelo
Department of Restorative Dentistry, Faculty of Dentistry, University of São Paulo, São Paulo, BRA.
Cureus. 2023 Dec 6;15(12):e50041. doi: 10.7759/cureus.50041. eCollection 2023 Dec.
This systematic review and meta-analysis aimed to evaluate the effectiveness of the ultrasonic tip associated with mechanized instrumentation in reducing the percentage of non-instrumented surfaces of human teeth with oval or flattened root canals. The study followed the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines. Pubmed/MEDLINE (Medical Literature Analysis and Retrieval System Online), Scopus, Embase, Web of Science, and Cochrane Library were searched for literature published till October 2022. Only in vitrostudies were included, which compared conventional mechanized endodontic treatment alone against conventional endodontic treatment in association with ultrasonic tips, evaluating the reduction in the percentage of non-instrumented walls (computed microtomography). Four studies were eligible for qualitative and quantitative analysis. The majority of the studies scored low for risk of bias. The meta-analysis comparing protocols demonstrated a reduced percentage of non-instrumented walls in groups using ultrasonic tips after the conventional mechanized technique (p<0.01) with a confidence interval of 1.04 (95%CI: 0.59, 1.50). The ultrasonic tip associated with mechanized instrumentation demonstrates a significant reduction in the percentage of non-instrumented surfaces in oval or flattened canals.
本系统评价和荟萃分析旨在评估与机械化学预备联合使用的超声工作尖在减少椭圆形或扁平根管的人牙未预备表面百分比方面的有效性。本研究遵循系统评价和荟萃分析的首选报告项目（PRISMA）指南。检索了PubMed/MEDLINE（医学文献分析和联机检索系统）、Scopus、Embase、Web of Science和Cochrane图书馆，以查找截至2022年10月发表的文献。仅纳入体外研究，这些研究将单纯传统机械化学预备与联合超声工作尖的传统根管治疗进行比较，评估未预备壁百分比的降低情况（计算机断层扫描）。四项研究符合定性和定量分析的标准。大多数研究的偏倚风险评分较低。比较方案的荟萃分析表明，在传统机械化学预备技术后使用超声工作尖的组中，未预备壁的百分比降低（p<0.01），置信区间为1.04（95%CI：0.59，1.50）。与机械化学预备联合使用的超声工作尖可显著降低椭圆形或扁平根管中未预备表面的百分比。
